Datasheet

AD7834/AD7835
Rev. D | Page 5 of 28
AC PERFORMANCE CHARACTERISTICS
These characteristics are included for design guidance and are not subject to production testing.
Table 3.
Parameter A B S Unit (typ) Test Conditions/Comments
DYNAMIC PERFORMANCE
Output Voltage Settling Time 10 10 10 μs
Full-scale change to ±1/2 LSB. DAC latch contents
alternately loaded with all 0s and all 1s.
Digital-to-Analog Glitch Impulse 120 120 120 nV-s
Measured with V
REF
(+) = V
REF
(−) = 0 V. DAC latch
alternately loaded with all 0s and all 1s.
DC Output Impedance 0.5 0.5 0.5 Ω See the Terminology section.
Channel-to-Channel Isolation 100 100 100 dB See the Terminology section; applies to the AD7835 only.
DAC-to-DAC Crosstalk 25 25 25 nV-s See the Terminology section.
Digital Crosstalk 3 3 3 nV-s
Feedthrough to DAC output under test due to change in
digital input code to another converter.
Digital Feedthrough—AD7834 0.2 0.2 0.2 nV-s Effect of input bus activity on DAC output under test.
Digital Feedthrough—AD7835 1.0 1.0 1.0 nV-s
Output Noise Spectral Density at 1 kHz 40 40 40 nV/√Hz All 1s loaded to DAC. V
REF
(+) = V
REF
(−) = 0 V.